Collaborate Disseminate
Solar panels are a great way to generate clean electricity, but require some energy storage mechanism if you also want to use their power at night. This can be a …read more Continue reading Hackaday Prize 2023: Supercapacitors Let Solar Speaker Work in Darkness
What do you call someone who gives the toddler in your life a musical instrument as a gift? In most cases, “mortal enemy” is the correct answer, but not everyone …read more Continue reading Upcycled Practice Amp Build Goes to Eleven
As we’ve followed a trail through Hi-Fi and audio systems from the listener’s ear towards the music source, we’ve reached the amplifier. In our previous article we gave a first …read more Continue reading Know Audio: Amplifier Nuts And Bolts
The demo code for [XTronical]’s ESP32-based SD card music player is not even 40 lines long, though it will also require a few economical parts before it all works. Nevertheless, making a microcontroller play MP3s (and other formats) from an SD card is considerably simpler today than it was years …read more
Continue reading ESP32 Becomes Music Player In Under 40 Lines of Code
Small microcontrollers can pack quite a punch. With the right code optimizations and proper use of the available limited memory, even small microcontrollers can do things they were never intended to. Even within the realm of intended use, however, there are still lots of impressive uses for these tiny cheap processors like [Lukasz]’s audio amplifier which uses one of the smallest ATtiny packages around in the video embedded below.
Since the ATtiny is small, the amplifier is only capable of 8-bit resolution but thanks to internal clock settings and the fast PWM mode he can get a sampling rate of …read more